PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9201991-2 1997 Renin is a rate-limiting enzyme of the renin-angiotensin system that regulates blood pressure and water-electrolyte balance. Water 98-103 renin Homo sapiens 0-5 9201991-2 1997 Renin is a rate-limiting enzyme of the renin-angiotensin system that regulates blood pressure and water-electrolyte balance. Water 98-103 renin Homo sapiens 39-44